mixer



FIGJ

Sept. 28, 1943.

H. P. MIXER ACCOUNTING MACHINE Original Filed April 25, 1956 4Sheets-Sheei 1 "III INVENTOR HAROLD F? MIXER d). 4 JLA? ATTORNEY Sept.28, 1943. H. P. MIXER ACCOUNTING MACHINE Original Filed April 25, 1936 4Sheets-Sheet 2 INVENTOR HAROLD F. MIXER ATVORNEY H. P. MIXER ACCOUNTINGMACHINE Original Filed April 25, 1936 Sept. 28, 1943.

4 Sheets-Sheet 3 FIG-.4

INVENTOR HAROLD P- MIXER AT TO RNE Y Sept. 28, 1943. H. P. MIXERACCOUNTING MACHINE '4 Sheets-Sheet 4 Original Filed April 25, 1936INVENTOR HAROLD P. MIXER BY L ATTORNEY Reissued Sept. 28, 1943 p Re. U Ni T E. D STATE S FATE NT QFF-ICE ACCOUNTING MACHIN E Original No.2,311,454, dated Febr ary 16, .1943, Serial No. 335,214, May 15, 1940,which is .a division of Serial No. 76,492, April 25, 1936, now

Patent No. 2,214,029, Application for reissue 3 Claims.

This is a reissue of my Patent No. 2,311,454, which was grantedFebruary16, 1943 on an application filed May 15, 1940, Serial No. 335,214; andsaid application was itself a division of my prior application filedApril 25, 1936, Serial No. 76,492, now Patent No. 2,214,029, datedSeptember 10, 1940.

The invention more particularly relates to accumulating mechanisms ofthe creep or crawlcarry type and means for zeroizing the accumulatorwheels. These accumulating mechanisms may be used as part of a number ofaccounting machines used for various purposes, the present use beingconfined to a multiplying machine fully described in the parentapplication. This multiplying machine, generally speaking, comprises asensing mechanism, a multiplication mechanism, a totaling mechanism,punching mechanism, and coordinated driving means for the various elements mentioned.

The invention has for its principal object to reduce the time requiredfor zeroizing the accumulator. The mechanism is so organized that asmall amount of rotation toward the zero position of a wheel of a lowerdenominational order permits the release of the wheel of next higherdenominational order for rotation toward its zero stop.

A more clear conception of the further objects, construction, andoperation of the invention may be had from the following detaileddescription when taken in conjunction with the accompanying drawings, inwhich Fig. 1 is an isometric view of the combined accumulating mechanismand the zeroizing mechanism;

Fig. 2 is an exploded isometric view of theaccumulator spur gearingshowing the relationship of the accumulator gears and wheels of theplanetary transmission for effecting the carry of the tens;

Fig. 3 is a plan view of three latch units showing some parts insection;

Fig. 4 is a detail view in elevation showing the mounting of theplanetary gearing comprising the carry mechanism on the accumulatorgearing;

Fig. 5 is a side view of Fig. 4 disclosing one of the accumulator gearsand its associated planetary gears mounted thereon;

Fig. 6 is a front view in elevation of one of the accumulator wheelsshowing the orbit gear of the planetary train fastened thereto and thesun gear associated with the next higher order likewise fastened to thewheel;

Fig. 7 is a side view of Fig. 6 disclosing the gearing in greaterdetail;

Fig. 8 is a side detail view with some parts in section showing anassembly of the stop arm,

dated September 10, 1940.

July 3, 1943, Serial No.

stop bail, release latch, and a pair of contacts cooperating with thestop arm of the highest denominational order accumulator unit;

Fig. 9 is a side deta'il'view showing thestoparm in elevated positiontogether withthe accumulator wheel, holding member, and sector lockingmember;

Fig. 10 is another detail view similar to Fig. *9 except that the partsare shown in another posi tion of operation.

The type of accumulator disclosed in'tl-i-is specification is commonlyknown as the crawl-carry, as distinguished from the snap-carry type ofmechanism in which transfer 'of tens occurs subsequent to theaccumulation operation. In the crawl-carry type, the transfer of tens iscontinuous and is ordinarily caused 'by some form "of step-down gearing.A'common example of the I crawl-carry is shown in the United Statespatent to Gardner, No. 1,828,180.

In the mechanism of the above patent the transfer is eifected throughthe medium of an eccentrically mounted gear and in taking totals fromthis mechanism it is necessary that the wheel of the lowestdenominational order be-positioned against its zero stop before thewheel of the next higher denominational order is released.

In the form of crawl-carry totalizer shown *in this application, thecarry is through the medium of a train of planetary spur gear-s whichfacilitates a faster zeroizing operation.

In the present mechanism, in a zeroizi'ng operation, thespring-impelledactuators for the accumulator gears, except that of lowest order, areinitially restrained b-y'certa'in locking devices each of which istripped or released under control of th accumulator wheelof nex't lowerorder. The release of each lock follows immediately on the release ofthat of next lower order except when a wheel registers nine, so that,when the total includes no nines, the accumulator actuators are releasednot far from simultaneously. When a wheel register-s nine, the releaseof the-next higher actuator is delayed-only until said wheel reachesabout its eight position. The stop arms, which arrest the wheels atzero, are also initially 'held out of engagement and each is releasedsimultaneously with the release of the associate actuator. Each saidstop arm is, therefore, never released while the next lower wheelregisters nine. It will be obvious that, if all wheels :had ninesregistered "thereon, the 'higherprder wheels would, due to the creep iorcrawl, stand very near the zero .point, and that, when the :stop arm waslowered into the path of the .stop, it might, and probably would, stopit at once rather than after turning nine spaces.

The accumulating mechanism comprises a pluone-tenth ofa turn of gearrality of accumulator units, together with certain latches for governingtheir operation. The gears which operate the accumulator units are notindicated in the drawing, (except in Fig. 2) since they do not form apart of the present invention. Any gear or sector driven by acalculating mechanism may operate the accumulator units since there isno restriction on timing or phase of operation. In addition to theoperating gears which roll numbers into the accumulator units there isprovided in the present instance a series of sectors 20 (Fig. 1) which,though normally out of mesh, may be brought into mesh with theaccumulator gears 2| to operate racks 22 orother means for recording orprinting the total.

The accumulator gears 2| are shown in detail in Figs. 1, 2, 4, and 5,and these wheels together with other accumulator parts are mounted on acommon shaft 23 which extends the entire width of the machine and isattached to side frames 11.

Each accumulator unit (Figs. 1, 2, 4, 5, 6, and 7) comprises theaccumulator gear 2|, accumulator wheel 24, together with an integral lug25 and a train of planetary gearing including a sun gear 25, planetgears 21, 28, 30, 3|, and an orbit gear 32 In an accumulator unit forthe lowest denomination order the sun gear 26 is fixed, while in each ofthe other units the sun gear is fastened to the accumulator wheel 24,and orbit gear 32 of the next lower order.

The accumulator gear 2| (Fig. 2) has thirtysix teeth and is designed tomesh with driving gear 35 which has forty teeth; the exact number ofteeth is unimportant, it being necessary only that the ratio of 9 to 10be maintained.

Fixed to each accumulator gear 2| (Fig. 4) is a stud 33 on which aremounted the gears 21 and 28 which gears are mounted together androtatably mounted on the stud. Rotatably mounted in andextending throughthe accumulator gear 2| is a short shaft 34 on one end of which ls'fiXedthe planet gear 30 and on the other the planet gear 3| which meshes withthe annular orbit gear 32 which is secured to the accumulator wheel 24.

The tooth ratios of the various gears 26 through 32 are such that oneturn of gear 26 will produce 32. In the present instance, gears 26 and21 have thirty 'iteeth each; gear 28 sixteen teeth; gear 30 thirtyteeth; gear 3| twelve teeth; and gear 32 sixty-four teeth.

As has been explained above when a digit is to be registered in theaccumulator, the drive gear 35 is rotated by external means one tenth ofa full revolution for each unit to be accumulated.

Due to the gear ratio set forth above the rotation of an accumulatordrive gear 35 causes its associated accumulator gear to be driven oneand one-ninth times as far. Thus, if the digit to be registered isassumed to be 9 the accumulator gear 2| will be driven one and one-ninthtimes nine-tenths of a complete turn; if 8 then one and one-ninth timeseight-tenths, or eight-ninths of a complete turn; and if 1 then one andoneninth times one-tenth or one-ninth of a complete turn.

The rotation of the accumulator gear 2| rotates the associatedaccumulator wheel 24 and its integral stop 25 until the stop is properlypositioned. The rotation of the accumulator wheel may be considered asthe'resultant of two separate operations upon it, although actually thetwo operations occur simultaneously.

One of the component movements of the resultant may be consideredas-that due to the teeth of planet gear 3| coacting with teeth of orbitgear 32 to pin the two gears together. Due to this component theaccumulator wheel 24 will be driven as many ninths of a turn as is theaccumulator gear 2|, in an additive direction.

The other component movement of the ressultant is that due to the actionof the planetary gear train. Thus, if we assume the sun gear 26 of thetrain to be stationary, which is true of the first, or unit gear, then,as the accumulator gear 2| rotates, the planetary gear 21 will roll onthe sun gear 26 and will rotate the orbit gear 32 in the opposite orsubtractive direction. Now the gear ratios are such that the orbit gear32 and, therefore, the accumulator wheel 24 tend to rotate one-tenth asmuch as the accumulator gear 2| in the opposite direction.

The resultant and actual motion of the accu-. mulator wheel 24 for anydigit is, then, the motion of the accumulator gear 2| minus onetenth ofthat amount. Thus, for a digit 9 the accumulator wheel rotates one turnminus onetenth of a turn or nine-tenths of a turn; for the digit 8, thewheel rotates eight-ninths. of a turn minus eight-ninetieths of a turn,or. eight tenths of a turn and for the digit 1 the accumulator wheelrotates one-ninth of a turn, minus one-ninetieth of a turn, or one-tenthof a turn.

From the above, it will be seen that an accumulator wheel duringaccumulating operations rotates as many tenths of a turn in an additivedirection as the digit registered represents.

In addition to movement imparted to it from the associated accumulatorgear 2|, each accumulator wheel 24 (except that of the lowestdenominational order) has imparted to it movement due to the rotation ofthe sun gear 26 attached to the accumulator wheel of the next lowerdenominational order. In this action, the gears 26, 21, 28,30, 3|, and32 act as ordinary step-down gearing, and serve to rotate eachaccumulator wheel one-tenth as far in the same direction as the wheel ofthe next lower order. For example, if the wheel of the lowest or unitsorder were rotated nine-tenths of a turn to register a nine and nodigits were inserted in the higher order wheels, then the wheel of thetens order would rotate nine one-hundredths of a turn, that of thethousands order nine-one-thousandths, that of the ten thousands ordernine ten-thousandths, etc. The movement of any wheel is, then, the sumof the movements imparted to it from its associated accumulator gearand. the correct decimals of the movements imparted to all lower orderwheels, these decimals being in each case the movement of any wheeldivided by ten to that power which represents the degree of removal ofthe lower order wheel from the higher order,.the movement of which issought.

Accumulator zeorizing mechanism The present calculating machines whichemploy the herein described accumulator operate in two phases. The firstphase stores or accumulates numbers in the accumulator due to theoperations of the drivinggears 35. These driving gears may be a part ofan adding machine, multiplying machine or any other calculatingmechanism and said wheels may operate in an additive or subtractivedirection. During the. first or accumulating phase the sector gears 20(Fig. 1) are pulled out of mesh with-the accumulator gears 2| by anyconvenient means. Fig. 1 shows a'slot cam 36 out in an arm 31 whichpositions a shaft 38 on which the sectors 20 are 'rotatably mounted.Movement of arm 31 causes the sectors to be moved in or out of mesh inaccordance with a predetermined schedule of operations which have beenfully described and disclosed in the parent application of which this isa division. It should be understood, however, that any mechanism whichwill shift from the driving gear to the zeroizing or totaling gear maybe used with this accumulator.

The present accumulator contemplates a second or totaltaking phase whichcomprises the rotation of the accumulator wheels in a reverse directionuntil the stops 25 (Figs. 1, '2, 6, '7, 9, and thereon strike stop arms40 located at definite points or until they reach the zero position.This rotation is effected after the accumulator wheels have been meshedwith a series of sectors and the action is caused by a series of springswhich urge the ratchet bars 51 toward the front of the machine.

In .prior crawl-type accumulators, it was cus-' tomary to mesh all theaccumulator gears with the associated toothed elements while thoseelements were prevented from moving, and to then release the toothedelements one by one progressively from the lowest to the highest order,the mechanism governing the timing of the progresslon being independentof the stop arms, the interval between successive releases beingsufficlent for a wheel to travel the maximum amount, namely, from 9 to0.

The mechanism for releasing the accumulator wheels in order and fordelaying such release will now be described.

Pivoted on a rod 4| (Figs. 1, 2, 8, 9, and 10) extending between thecarriage side plates (not shown) are a number of control and stop arms40, one-for each accumulator unit. These arms are formed as bell-cranksand each one is provided with a bent-over lug 42 on its substantiallyhorizontal arm and a stud 43 on its vertical arm. Each bent-over lug 42lies in the same vertical plane as the lug on the accumulator wheel ofcorresponding denominational order "sothat, when the arm 44 is rotatedclockwise (Fig. 9), the lug 42 lies in the path of the lug 25 on wheel24 and causes the wheel to stop at its zero position.

Pivoted on the rod 4| (see Fig. 1) adjacent to each arm is a holdingmember 44 which serves to hold the sector, or other toothed elementagainst movement and also serves to hold the arm 40 of the associatedaccumulator unit against clockwise rotation.

Each holding member 44 is formed as shown in Figs. 1, 2, 8, 9, and 10,it being substantially L-shaped, having a horizontal arm 45 and avertical leg which has a lug 46 bent to the left from the side thereof,and a lug 41 bent to the right from the opposite side. The horizontalarm 45 cooperates with a restoring bail 4B. The bottom of holding member44 is formed with an extending foot 50 and is adapted to cooperate witha lug 5| formed on a sector locking member 53. The locking member ispivotally mounted on shaft 52and cooperates with apin 54 on the sector20 to hold it from rotation when held down by the foot 50 (see Fig. 9).

Lug 45 lies in front of the vertical leg of arm 40 so that when theholding member 44 is in its normal position (as shown in Figs. 2 and 9)the arm 40 is held against clockwise rotationor out of the path of theassociated zero stop 25.

The lug 41 (Fig. 9) is positioned in front of the end of the left-handarm 55 of latch 56. The foot 50, when in normal position lies directlyabove lug 5| on sector locking member 53, thereby preventing the releaseand subsequent operation of the sector '20 by the spring tension appliedthereto.

Release latch 55, as shown in Fig. 1, is a U- shaped piece having arms55 and 51 integral with each side of the U, and having a lug on one sideto which a spring is attached. The latches 56 are pivoted on a rod 58extending between the side frames, the rod being so located that, whenthe release latchesv are in normal position (Fig. 9), the rearward endof the left-hand arm 55 abuts'the right-hand lug 41 on holding member 44of an accumulator unit, while the horizontal portion of the cam surfaceon the righthand arm lies above the stud 43 on the arm40 associated withthe accumulator unit of lower order.

When a total is to be taken the toothed elements, in the presentinstance the toothed sectors 2|], are caused to be meshed with theaccumulator gears 2|, while being held against rotation by a restoringbail not shown. When in mesh they are held by studs 54 thereonpositioned in notches in locking members 53.

At this time the bar or bail 48 is raised by a link 60 (Fig. 1) which isoperated by a cam (not shown) in the base of the machine and all theholding members 44 are released for clockwise rotation in o far ascontrol by the bail is concerned. The members40 and 44 are now undercontrol of the U-shaped release latches 55.

However, only the lowest'order holding member is free to move at thistime for it is the only one not blocked by a release latch 58.

When released, the holding member 44 is rotated in a clockwise directionby a spring! (Figs. 2 and 8) stretched between a stud and an anchor bar(not shown).

Thus, when upon taking a total the bail 48 is raised, the units holdingmember 44 rotates, and the foot 55 thereon moves off the lug 5| onlooking member 53. Although member 53 is still urged downwardly (due toa spring 62 stretched between a forward extension thereof and an anchorbar) a strong spring (not shown) tends to rotate the sector 20 clockwiseand consequently the stud 54 cams the locking member 53 upwardly and thesector is free to rotate. If the associated accumulator Wheel 24 at thitime lies in any position other than that representative of 9," the arm40 (which is urged clockwise by a spring 63 stretched between stud 43and an anchor bar) immediately moves clockwise until the lug 42 thereonrests on the periphery of the accumulator wheel 24. If, however, thewheel should be in the 9 position, the lug strikes the top portion ofstop 25 thereby preventing the complete oscillation of stop arm 40 untilthe lug 25 has been rotated so that the wheel 24 reaches the 8 position.

When the arm4i'] rotates (see 9 and 10) the stud 43 thereon strikes thecarnmlng surface on right-hand arm 51 of release latch 55, causing it torise and tne rearward end of its lefthand arm 55 is removed from thepath of the lug 41 on the holding member'44 of the next higherdenominational order. This second holding member rotates clockwise andreleases the associated arm 4|) and sector locking member of theadjacent higher order. Again the stop arm 40 moves, immediately ifposition other than nine the wheel stands at a (and after a slight deupa similar train of operations to release the next adjacent higher orderwheel'and stop arm. This action continues from one accumulator unit toanother until all Wheels are released.

. It will be seen from the above that, if the accumulator wheels oflower denominational orders have therein digits greater than those inthe wheels of higher denominational orders, then the wheels of higherorders may reach their zero positions first.

In some crawl and carry mechanisms, embodying the eccentrictransmission, such operation would be fatal because the higherdenominational order wheels once positioned could not be corrected, and,since they would be positioned before the creep from the lowerdenominational order wheels was taken out, their final reading orpositioning would be incorrect.

Due to the planetary spur gear arrangement the present device isoperative under conditions such as set forth. If a wheel of higherdenominational order reaches its zero position before those of lowerdenominational orders, then, as

the lower order Wheels come to their zero positions, they causereadjustment of the accumulator gear and sector of the higher orderunit.

If, for example, the units order wheel has in it a digit of greatervalue than that in the tens order wheel, then, after both have beenreleased, the tens order wheel will reach its zero position first. In,moving to its zero position the tens order wheel will permit the sector(or other toothed element) associated therewith to move too far and thesector will be incorrectly positioned.

As the units order wheel continues to move towards its zero position,the sun gear 26 of the tens order unit is carried therewith. As the sungear rotates it also rotates the step-down gearing, comprising planetarygears 21, 28, 30, and 3| with it, the gears 26 and 3| both rotatingcounterclockwise. Since the orbit gear 32 is prevented from rotating,due to the fact that stop is against the stop arm 40, the accumulatorgear 2| is forced to move clockwise and in so moving forces the sector20 of the tens order to be readjusted to the proper position.

Let it be assumed, now, that the numbers "80 and 189 are inserted in theaccumulator wheels in two successive accumulating operations, giving atotal of 269.

After the first accumulating cycle the units order wheel stands at zero,the tens order wheel at 8 (0.8 of a turn), etc.

After the second accumulating cycle the units order Wheel stands at "9(0.9 of a turn), the tens order wheel at 6.9 (0.69 of a turn, since itstood at 0.8 and had added to it 0.3 and 0.09 and the hundreds orderwheel at 2.69 (0.269 of a turn-4t stood at 0.08 of a turn and had addedto it 0.1 turn carry from the tens order plus 0.08 of a turn also carryfrom the tens order and 0.009 of a turn carry from the units order).

The units, tens, and hundreds order wheels thus stand at 9, 6.9, and2.69, respectively.

If a total is now initiated, or, more exactly, if the bail 48 is raised,the arm of the units order will be released for clockwise rotation (seeFigs. 9 and 10), but, since the lug 25 is in the 9 position, the lug 42will strike its periphery and the arm will be prevented from moving.However, bai148 also released holding member 44 and thus caused therelease of the sector 20 of the units order.

When the sectorhas moved through one unit space, the wheel of the unitsorder will also have .lay if at nine position), and, when it moves, setsmoved through one unit space and will lie at 8, the tens wheel at "63,and the hundreds wheel at "2.68.

Although the wheels 24 of the tens and hundreds order are free to move,the corresponding sectors 20 are held by their locking members 53. Allthe movements of these wheels are caused by the planetary gearing of theunits carry mechanism.

When the units wheel reaches 8, the arm 40 associated therewith drops,since the lug 25 has passed by. This movement of the units arm 40, bystud 43 cams arm 51 upward and raises arm 55 out of the path of lug 41of the tens holding member 44, permitting it to rotate clockwise andrelease the tens order sector 20. The arm 40 of the. tens orderimmediately moves and releases the hundreds order sector. At this timethe units order sector Will have moved one unit space While othersectors will not have moved.

Assuming, for convenience, that the sectors of the tens and hundredsorder are released simultaneously and that this release is at the momentwhen the units order wheel reaches its 8 position, then it is obviousthat the hundreds order wheel will reach its zero position before eitherthe tens or units order wheels.

The movement of the hundreds order wheel toward its zero stop iscomprised of movement transmitted from its own sector and gear andmovement transmitted from the gears and sectors of lower orders. Thesemovements may be computed since the gear ratios are known, the movement,of course, is in a subtractive direction bringing the stops 25 towardsthe stop arms 40 rather than away from them as in adding cycles.

If, now, we assume that all sectors move at the same speed and,consequently, the same amount in a given time (this is a probablecondition for the springs, the friction, etc., of the various units aresubstantially equal) then the movement of the sectors 20, or equivalenttoothed elements, may be taken as the same for all and equal to X.

Now X units of movement of a sector cause X units of movement of thecorresponding accumulator wheel,

10 units of movement of the next higher order wheel and units ofmovement of the second higher order wheel. Then, the units of movementof the Wheel of the hundreds order, to bring it to 0, namely, 2.68equals the movement of its own sector, or

X plus of the movement of the tens order sector, or

5 10 plus of the movement of the units order sector, or

22 1 0 Then lllX W Solving this equation, we. find X=2.414. This isthenumber of units of movement. by the sectors to bring the hundreds orderwheel to zero. Checkingthis to ascertain if the hundreds order wheeltruly stands at we find that the wheel has moved 2.414 plus .2414 plus.02414 or 2.680 which, subtracted from 2.68, :0.

Now, the tens order wheel at this time will have moved 2.414 plus .2414,or 2.655. Since it stood at 618 it now stands at 6.800 minus 2.655 or4.145.

At the same time the units order wheel will have moved 2.414 and sinceit stood at 8.000, will now stand at 8.000 minus 2.414 or 5.586.

Also, at this time the hundreds, tens, and units sectors will have movedfrom their zero positions, respectively, 2.414, 2.414, and 3.414 units.It will be remembered that the units wheel moved one unit to clearthestoparm and start the totaling operation.

Now the tens and units order wheelswill continue to rotate and after thetensorder wheel has rotated through 4.145 unit spaces it will come torest with its stop against the stop arm. In order that the wheel rotatethrough 4.145 units the tens and units sectors must move X unit spaces.Now,

and, therefore, X=3.768.

Again checking, we find that the tens order wheel rotates 3.768 plus0.3768 or 4.145 units bringing it to zero. The units order wheel willhave rotated 3.768 units and will now stand at 5.586 minus 3.768 01'1.818 units from zero.

As the tens order wheel rotated to zero it r0 tated the hundreds ordersun gear 23 with it (counter-clockwise as seen in Fig. 2), and thistended to rotate the hundreds order-orbit gear 32 counter-clockwise. Butthe stop 25 being already against thestop arm, the orbit gear could notmove counter-clockwise and consequently the accumulator gear 21 wascaused to move in the opposite direction (clockwise) one-ninth as manytimes as the sun gear or .0460 turn; Now, each one-ninth of a turn ofthe gear 2| representsa unit and consequently the gear 21 and itassociated sector will have moved nine times 0.0460 unit or 0.414- unit.

In order to show clearly that, when an accumulator Wheel 24 has reachedits zero stop arm, the correction of the associated accumulator gear 21.by the accumulator wheel 24 of. the next lower order is one-ninth of themovement of the latter wheel, the following explanation is given:

The sun gear 20. will move as many fractions of a turn as does the wheelofnext lower order since the sun gear is fastened to that wheel. Thenthe pinion 3! of the higher order tends to rotate the orbit gear 32 ofthat order onetenth the number of turns of the sun gear. But the orbitgear 32 of the higher order cannot rotate counter-clockwise since thestop thereon is against the stop arm and consequently the accumulatorgear 25 of the higher order might be said to rotate clockwise one-tenththe nu ber of turns of the wheel of lower order. In

X plus so doing the accumulator gear carries the planet gear 21 with.it, causing the gear to roll on the adjacent sun gear, and thus tendingto move the orbit gear again, this time, one one-hundredth the number ofturns of the lower order accumulator wheel. Again this results inrotating the higher order accumulator gear clockwise and in rolling theplanet gear 21 on the sun gear 25. Now the planet gears and 3| againtend to rotate; the orbit: gear and to again. rotate the accumulatorgear, this time, of course, one onethousandths the. number'ofturns ofthe sun gear; and: this action continues until all have reached normal;

Now the accumulator gear will. have moved one-tenth, plusone-hundredths, plus one-thousandths, plus, etc, or will have moved anumber of turns represented: by the repeating decimal .1-111 thisrepeating decimal equals oneninth. and thus it? is seen that themovement of the higher order accumulator gear is one-ninth that. of the.lower order accumulator Wheel.

Now the sector: moves with the accumulator gear and, since it stood at2.414 and has just moved 0.414 toward; 0, it now stands at 2.000 whichvis correct.

At this time, the hundreds and tens wheels are at 0 and the units wheel1.818 units from 0, also at' this, time the. sectors stand 2, 6.182(2.414 plus 3.768), and 7.182: (3.414. plus 3.768) units from zero- Theunits accumulator wheel is now 9 minus 7.182 or-1-.818 units from 0.

To rotate it this amount, its sector must move this. amount. In moving1.818 units the unit wheel is brought against the zero stop. Also thesun gear of the tens order rotates 1.818. units counter-clockwise andtends to rotate the orbit gear. of: that order counter-clockwise0.1818units. Since this is prevented, due to the stop lying against thestop arm, the gear 21' rotates 0.1818 (002.02 turn) clockwise and thusthe tens sector 20. is moved1.1818 unit toward 0. Now, the tens sectorstood: at 6.182 and. this minus .1818 equals 6.00v which correctlypositions the sector.

The units order sector has moved one unit plus 2.4 14 plusv 3.768 unitsplus 1.818 units and is, therefore, positioned at 9, which is correct.

As. has been stated above, the recording means which punches or printsthe total derived from the accumulator wheels 2| may be of anyconvenient construction and is not a part of this invention. Fig. 1'indicates one way in which sucha: means may be constructed. The sectors20 which: are meshed with the accumulator gears ll just prior to totaltaking, position racks 22, said racks cooperating with smaller gears 64attachedto the sectors 20. A. disc 65 and a shroud plate. Eli-hold thegear and rack in pro-per spaced relation. At one end of .therack 22 aratchet bar 6 1 is attached for positioning a plurality of recordingdevices'not shown in the drawings. These bars 22, 6.1 may serve as aconventional illustration of a total recording mechanism.

It is quite necessary that the total taking or zeroizing mechanism beshifted in and out of mesh with the accumulator gears when the operatingphases are changed from accumulating to total taking and back again. Itis also necessary to disengage thedriving mechanism at some point sothat a total may be rolled out of the accumulator easily and quickly.Since the driving means comprises a series of mechanical clutches whichare normally disengaged, further disengaging means is not necessary.

Fig. 2 shows a driving gear 35 permanently meshed with the accumulatorgear 2|. A detent wheel. 68' is secured to said driving gear in order toregister the digit more accurately. A detent roller 10 ismounted on alever II, which, in turn, is rockably mounted on a shaft 12 and urgedcounter-clockwise by a. spring 13. When a total is to be rolled out ofthe accumulator unit, all the detent levers (there is one for each drivegear) are pulled away from the detent wheels accumulating cycle or else.15 and 16 fully disclosed and described in the parent application. Suchan action is not necessary to the successful operation of the device butthe speed of total taking is increased and the operation is more quiet.

, Fig. 8 shows the stop arm 40 of: the highest order accumulatortogether with its associated mechanisms. This stop arm is the last oneto be operated and within a very short time after the arm 4|] hasdescended the total taking operation is at an end and the machine isready to changeitsphase of operation to either another a printing orpunching phase.

To initiate the new phase of operations a pair of contacts 14 ispositioned to the leftof the highest order stop arm attached to springarms and secured by the usual insulating means to the left side frame11. A lug 18 is attached to the upper spring arm. 15 in such manner thatit projects under the stop arm 40 and is engaged by it when the stop armis lowered.

The contacts 14 may initiate a new phase of operations in a number ofways such as by relays, magnetic clutches or solenoid operated gearchange devices. These are not shown and do not form a part of thepresent invention.

It will be perceived that the arm or lever 40 with its lug 42, latorwheel 24 in cooperation, have two different functions and constitute twodistinct means notwithstanding the fact that, in the instance of theinvention shown in the drawings, it was found convenient andadvantageous to embody these two means in the same integral pieces ofmetal. It is only the radial edge of lug 25 and the rear'edge of lug 42that stop the wheel; and it is only the under surface of lug 42 ridingon the peripheral edge of the lug 25 (which is elongated for thepurpose) that serves to delay the operation of the next higher wheel.When the lug 42 isarrested by the lug 25, and subsequently descends tothe low pant of the wheel 24, thus first delaying and then effecting therelease of the next higher order, these parts are performing a controlor timing function quite independent of the stopping function afterwardperformed by other portions of the same lugs. One part of this controlor timing function is to prevent the descent of the lug 42 of nexthigher order, considered as a stop lug, into engaging positionprematurely. The arm 40 as illustrated may be characterized as 'acombined control and stop arm.

It will also be perceived that when consecutive wheels register ninesthe precise point at which the lug 25 of a lower wheel lets the lug l2descend to the low part of the wheel 24, is not critical, except thatthe arm 40 must be held up long enough to insure that enough of thecreep will first have been removed from the next higher order wheel tobring the lug 25 of that Wheel safely under its lug 42. In the instanceillustrated in the drawings, the arm 4i]v makes its descent at about thepoint, or a little before the point, where thewheel is in its eightposition. In this instance, the arm 40 when first released from thelatch 56, might find its wheel 24 anyand the lug 25 on the accumu- 68 bymechanism not shown in the drawings, but

where from its theoretical position 9.8 to, say, 8.2; but in anotherinstance it might be anywhere from 9.7 to 7, for example. In some of theclaims this indefinite point is expressed as approximately 9.

While I have described what I consider to be a highly desirableembodiment of my invention, it is obvious that may changes in form couldbe madewithout departing from the spirit of my invention, and I,therefore, do not limit myself to the exact form herein shown anddescribed, nor to anything less than the whole of my invention ashereinbefore set forth, and as hereinafter claimed.

What I claim as new, Letters Patent,is:

1. In normalizing control mechanism for an accumulator of the crawlcarry type, which accumulator comprises in each denomination anaccumulator gear, an accumulator wheel and differential gearing, thecombination of locks for the sectors which return the wheels to zero,stops for the accumulator wheels, control members one cooperating witheach accumulator wheel, latches to maintain said stops and controlmembers out of engaging position and said locks in looking condition inall orders except the lowest, lugs on said accumulator wheels torestrain said control members and stops each When released from itslatch and when the associate accumulator wheel stands approximately atnine, and means controlled by each said control member when freed fromits latch and from its said lug to trip the latch for the next higherorder.

2. In a crawl-carry accumulator and zeroizing mechanism therefor, thecombination of an accumulator wheel for each denominational order havinga high part and a low part, a control member and a zero stop cooperatingwith each said wheel, said control member being adapted to be held bysaid high part during a portion of the return rotation of said wheel, aspring operated restoring sector for each denomination, a lock for eachsaid sector, release latches one controlling the lock, control memberand stop for each order above the lowest, and means controlled by thecontrol member in each order when said member descends to the low partof its associate wheel to trip the release latch for the next higherorder.

3. In a computing machine having an accumulator of the crawl carry typeincluding numeral wheels and resultant Wheels, and sectors to restoresaid wheels to zero position, zeroizing control mechanism control arms,one controlled by the resultant wheel of each order; each resultantwheel having a high part and a low part, said high part being adapted tohold up its associate control arm when the resultant wheel standsapproximately at nine, locks for the sectors, and release latchesinitially holding said control arms against descending and holdingsaidlocks in looking condition, and means controlled by a control armwhen it descends to the low part of its associate resultant wheel totrip the release latch for the control arm and the lock of next higherorder.

and desire to secure by HAROLD P. MIXER.

comprising in combination

